/* 수탁형 지갑 DB 구조와 상태 흐름 — Light docs UI */

:root {
  --bg: #ffffff;
  --bg-subtle: #fafafa;
  --bg-sidebar: #f7f7f8;
  --bg-code: #f5f5f7;
  --bg-callout: #f5f7fb;
  --bg-warn: #fff7ed;
  --bg-danger: #fef2f2;
  --bg-success: #f0faf2;

  --border: #e5e5e7;
  --border-strong: #d2d2d7;
  --border-callout: #d1dbf0;
  --border-warn: #f5d5a8;
  --border-danger: #f3c0c0;
  --border-success: #c8e6cf;

  --text: #1d1d1f;
  --text-secondary: #515154;
  --text-tertiary: #86868b;
  --text-link: #0366d6;
  --text-link-hover: #0246a8;

  --accent: #0366d6;
  --accent-soft: #e7f0fa;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --sidebar-width: 280px;
  --max-content-width: 820px;
  --header-height: 0px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, "Cascadia Mono", "Roboto Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.menu-toggle {
  display: none;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- Layout ---------- */

.layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  padding: 24px 0;
  z-index: 50;
}

.sidebar .nav-section {
  margin-bottom: 18px;
  padding: 0 20px;
}

.sidebar .nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin: 0 0 8px;
}

.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar li { margin: 0; }

.sidebar a {
  display: block;
  padding: 6px 10px;
  margin: 1px 0;
  font-size: 13.5px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  line-height: 1.45;
}

.sidebar a:hover {
  background-color: var(--bg);
  color: var(--text);
}

.sidebar a.active {
  background-color: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
  border-left-color: var(--accent);
}

/* ---------- Content ---------- */

.content {
  flex-grow: 1;
  margin-left: var(--sidebar-width);
  padding: 40px 56px 80px;
  max-width: calc(var(--max-content-width) + 112px);
}

.content section {
  margin-bottom: 56px;
  scroll-margin-top: 24px;
}

.content section + section {
  border-top: 1px solid var(--border);
  padding-top: 40px;
}

/* ---------- Typography ---------- */

h1, h2, h3, h4, h5 {
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.015em;
  line-height: 1.3;
}

h1 {
  font-size: 32px;
  margin: 0 0 8px;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 24px;
  margin: 0 0 16px;
}

h3 {
  font-size: 18px;
  margin: 32px 0 12px;
}

h4 {
  font-size: 15px;
  margin: 24px 0 8px;
  color: var(--text);
}

h5 {
  font-size: 14px;
  margin: 16px 0 6px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

p { margin: 0 0 14px; }

.lead {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

.section-subtitle {
  display: block;
  font-size: 14px;
  color: var(--text-tertiary);
  font-weight: 400;
  margin-bottom: 12px;
}

a {
  color: var(--text-link);
  text-decoration: none;
}

a:hover {
  color: var(--text-link-hover);
  text-decoration: underline;
}

strong {
  font-weight: 600;
  color: var(--text);
}

em { font-style: italic; }

ul, ol {
  margin: 0 0 14px;
  padding-left: 22px;
}

li { margin-bottom: 4px; }
li > ul, li > ol { margin-top: 4px; margin-bottom: 4px; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* ---------- Code ---------- */

code {
  font-family: var(--font-mono);
  font-size: 13px;
  background-color: var(--bg-code);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--text);
}

pre {
  background-color: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.55;
  margin: 0 0 16px;
}

pre code {
  background-color: transparent;
  padding: 0;
}

/* ---------- Tables ---------- */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 600;
  background-color: var(--bg-sidebar);
  color: var(--text);
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background-color: var(--bg-subtle); }
td code { font-size: 12.5px; }

/* Overview domains table — cell 줄바꿈 방지 + 컨테이너 안에 맞춤 */
.overview-domains td,
.overview-domains th { white-space: nowrap; }
.overview-domains { font-size: 13px; }
.overview-domains th,
.overview-domains td { padding: 8px 10px; }
/* tooltip clipping 방지: 이 table-wrap 만 overflow visible */
.table-wrap:has(.overview-domains) { overflow: visible; }

/* ---------- Callouts ---------- */

.callout {
  border-left: 3px solid var(--border-callout);
  background-color: var(--bg-callout);
  padding: 12px 16px;
  margin: 0 0 18px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 14px;
}

.callout-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.callout p:last-child { margin-bottom: 0; }

.callout-warn { border-left-color: var(--border-warn); background-color: var(--bg-warn); }
.callout-danger { border-left-color: var(--border-danger); background-color: var(--bg-danger); }
.callout-success { border-left-color: var(--border-success); background-color: var(--bg-success); }

/* ---------- Diagram (Mermaid + svg-pan-zoom) ---------- */

.diagram {
  margin: 0 0 24px;
  padding: 0;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

.diagram .mermaid {
  display: block;
  width: 100%;
  height: 480px;
  margin: 0;
  padding: 0;
  background-color: var(--bg-subtle);
  font-family: var(--font-sans);
  cursor: grab;
  overflow: hidden;
}

.diagram .mermaid:active { cursor: grabbing; }

.diagram .mermaid svg {
  display: block;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  user-select: none;
}

.diagram-caption {
  display: block;
  padding: 8px 16px;
  margin: 0;
  background-color: var(--bg);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: center;
}

@media (max-width: 768px) {
  .diagram .mermaid { height: 340px; }
}

/* ---------- Badges ---------- */

.badge {
  display: inline-block;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 3px;
  margin-right: 4px;
  letter-spacing: 0.02em;
  vertical-align: middle;
  white-space: nowrap;
}

.badge-mutable    { background: #fef3c7; color: #92400e; border: 1px solid #fcd34d; }
.badge-cache      { background: #fef9e7; color: #846215; border: 1px solid #e6cf94; }
.badge-append     { background: #e6f0e8; color: #2a5a36; border: 1px solid #b7d8bf; }
.badge-chain      { background: #d1eddc; color: #1f6c3d; border: 1px solid #a4d6b3; }
.badge-setonce    { background: #f0fae4; color: #5a7a2a; border: 1px solid #c5e09f; }
.badge-runtime    { background: #e0e7ff; color: #3730a3; border: 1px solid #c7d2fe; }
.badge-external   { background: #e5e7eb; color: #374151; border: 1px solid #d1d5db; }
.badge-forbidden  { background: #fde2e2; color: #8c2a2a; border: 1px solid #ebbcbc; }
.badge-pk         { background: #ecf3fb; color: #2858a4; border: 1px solid #c8dbf0; }

/* ---------- Two-column ---------- */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}

.col-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  background-color: var(--bg-subtle);
}

.col-card h4 {
  margin-top: 0;
  font-size: 14px;
}

.col-card ul {
  margin-bottom: 0;
  font-size: 13.5px;
}

/* ---------- Glossary tooltip ---------- */

.g {
  display: inline-block;
  margin-left: 1px;
  padding: 0 2px;
  font-size: 0.78em;
  font-weight: 500;
  color: var(--accent);
  background-color: var(--accent-soft);
  border-radius: 3px;
  cursor: help;
  position: relative;
  user-select: none;
  vertical-align: super;
  line-height: 1;
}

.g:hover,
.g:focus {
  outline: none;
  background-color: var(--accent);
  color: #ffffff;
}

.g::after {
  content: attr(data-tip);
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  background: #1d1d1f;
  color: #ffffff;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
  white-space: normal;
  width: max-content;
  max-width: 280px;
  z-index: 100;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  pointer-events: none;
  vertical-align: baseline;
  opacity: 0;
  visibility: hidden;
  transform: translateY(2px);
  transition: opacity 0.12s ease, transform 0.12s ease, visibility 0.12s;
}

.g:hover::after,
.g:focus::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

@media (max-width: 640px) {
  .g::after { max-width: 220px; }
}

/* ---------- Page nav (prev / next) ---------- */

.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 16px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.page-nav-link {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease, background-color 0.15s ease;
  max-width: 48%;
}

.page-nav-link:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-subtle);
  text-decoration: none;
}

.page-nav-prev { text-align: left; }
.page-nav-next { text-align: right; margin-left: auto; }

.page-nav-dir {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  font-weight: 500;
}

.page-nav-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.page-nav-spacer { flex: 1 1 0; max-width: 48%; }

@media (max-width: 640px) {
  .page-nav { flex-direction: column; gap: 10px; }
  .page-nav-link, .page-nav-spacer { max-width: 100%; }
  .page-nav-next { margin-left: 0; text-align: left; }
}

/* ---------- Reference / footer ---------- */

.reference {
  font-size: 12.5px;
  color: var(--text-tertiary);
  font-style: italic;
  margin-top: 8px;
}

.site-footer {
  margin-left: var(--sidebar-width);
  padding: 32px 56px;
  border-top: 1px solid var(--border);
  background-color: var(--bg-sidebar);
  font-size: 13px;
  color: var(--text-tertiary);
}

.site-footer p { margin-bottom: 6px; }

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  :root { --sidebar-width: 240px; }
  .content { padding: 32px 32px 64px; }
  .two-col { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: inline-block;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 250;
    background-color: var(--bg);
    box-shadow: var(--shadow-sm);
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    width: 280px;
    z-index: 200;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-md);
  }

  .content {
    margin-left: 0;
    padding: 24px 18px 48px;
  }

  .site-footer {
    margin-left: 0;
    padding: 24px 18px;
  }

  h1 { font-size: 26px; }
  h2 { font-size: 20px; }
}

@media print {
  .menu-toggle, .sidebar, .site-footer { display: none; }
  .content { margin-left: 0; max-width: 100%; padding: 0; }
  body { font-size: 11pt; }
  h2 { page-break-before: always; }
  h2:first-of-type { page-break-before: avoid; }
  .diagram, .table-wrap { page-break-inside: avoid; }
}